Point b on the number line shows benny's score after the first round of a quiz: a number line is shown from negative 10 to 0 to positive 10. there are increments of 1 on either side of the number line. the even numbers are labeled on either side of the number line. point b is shown on 2. in round two, he lost 6 points. which expression shows how many total points he has at the end of round two?

a) 2 + 4 = −6, because −6 is 4 units to the left of 2
b) 2 + (−4) = −6, because −6 is 4 units to the left of 2
c)2 + 6 = −4, because −4 is 6 units to the left of 2
d)2 + (−6) = −4, because −4 is 6 units to the left of 2